740678565569 has 4 divisors (see below), whose sum is σ = 741371437140. Its totient is φ = 739985694000.

The previous prime is 740678565541. The next prime is 740678565577. The reversal of 740678565569 is 965565876047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 965565876047 = 23981 ⋅40263787.

It can be written as a sum of positive squares in 2 ways, for example, as 267180441025 + 473498124544 = 516895^2 + 688112^2 .

It is a cyclic number.

It is not a de Polignac number, because 740678565569 - 2³⁶ = 671959088833 is a prime.

It is a super-2 number, since 2×740678565569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 740678565499 and 740678565508.

It is not an unprimeable number, because it can be changed into a prime (740678565509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346434182 + ... + 346436319.

It is an arithmetic number, because the mean of its divisors is an integer number (185342859285).

Almost surely, 2^740678565569 is an apocalyptic number.

It is an amenable number.

740678565569 is a deficient number, since it is larger than the sum of its proper divisors (692871571).

740678565569 is a wasteful number, since it uses less digits than its factorization.

740678565569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692871570.

The product of its (nonzero) digits is 381024000, while the sum is 68.

The spelling of 740678565569 in words is "seven hundred forty billion, six hundred seventy-eight million, five hundred sixty-five thousand, five hundred sixty-nine".